Sahih Al Bukhari (117)

حَدَّثَنَا آدَمُ، قَالَ: حَدَّثَنَا شُعْبَةُ، قَالَ: حَدَّثَنَا الحَكَمُ، قَالَ: سَمِعْتُ سَعِيدَ بْنَ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ: بِتُّ فِي بَيْتِ خَالَتِي مَيْمُونَةَ بِنْتِ الحَارِثِ زَوْجِ النَّبِيِّ صلّى الله عليه وسلم وَكَانَ النَّبِيُّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ عِنْدَهَا فِي لَيْلَتِهَا، فَصَلَّى النَّبِيُّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ العِشَاءَ، ثُمَّ جَاءَ إِلَى مَنْزِلِهِ، فَصَلَّى أَرْبَعَ رَكَعَاتٍ، ثُمَّ نَامَ، ثُمَّ قَامَ، ثُمَّ قَالَ: "نَامَ الغُلَيِّمُ " أَوْ كَلِمَةً تُشْبِهُهَا، ثُمَّ قَامَ، فَقُمْتُ عَنْ يَسَارِهِ، فَجَعَلَنِي عَنْ يَمِينِهِ، فَصَلَّى خَمْسَ رَكَعَاتٍ، ثُمَّ صَلَّى رَكْعَتَيْنِ، ثُمَّ نَامَ، حَتَّى سَمِعْتُ غَطِيطَهُ أَوْ خَطِيطَهُ، ثُمَّ خَرَجَ إِلَى الصَّلاَةِ

Ibn `Abbas (may Allah be pleased him) narrated: I stayed overnight in the house of my aunt Maymunah bint Al Harith (the wife of the Prophet (peace be upon him)) while the Prophet (peace be upon him) was there with her during her night turn. The Prophet (peace be upon him) offered the `Isha' Salah (in the masjid), returned home and after he had performed four Rak`ah Salah, he slept. Later on he got up at night and then asked whether the boy (or he used a similar word) had slept? Then he got up to perform Salah and I stood up by his left side but he made me stand to his right and offered five Rak`ahs followed by two more Rak`ahs. Then he slept and I heard him snoring and then (after a while) he left for the (Fajr) Salah.